The mounting structure of the installed part and the mounting structure of the flange head at the end of the hose fitting.

Abstract

The present invention provides an installation structure for a mounted part that reduces the deflection of the mounting member, suppresses breakage and deformation, and improves the durability of the mounting member to achieve a long service life, and an installation structure for a flange head at the end of a hose fitting. In the installation structure for a flange head at the end of a hose fitting that is pressed and mounted on the mounting surface (1202) by engaging a bolt (44) inserted into a bolt through hole (36) with the internal thread (1204) of the mounting surface (1202), the axis (T) of the bolt through hole (36) and the internal thread (1204) is arranged at an angle relative to the normal (L) of the mounting surface (1202) such that at least a portion of the head (4402) of the bolt (44) inserted into the bolt through hole (36) and engaged with the internal thread (1204) is located on the side closer to the protrusion (3404) than the boundary (B) between the main body (3402) and the protrusion (3404).

Description

Technical Field

[0001] The present invention relates to an installation structure of an installed part and an installation structure of a flange head at an end of a hose piping. Background Art

[0002] For example, in a construction machine, a control valve connected to a hydraulic pump is provided, and hydraulic pressure is supplied from the control valve to a traveling hydraulic motor, a rotating hydraulic motor, and various working hydraulic actuators via a hose piping (Patent Document 1, Patent Document 2).

[0003] A flange head is provided at an end of the hose piping. The flange head has a first flow path passing therethrough and is joined to an end of the hose. A ring plate portion is provided at a tip of the flange head, and a first opening of the first flow path is located in the ring plate portion.

[0004] In addition, an installation surface for installing an end of the hose piping is provided in the control valve. Second openings of a plurality of second flow paths connected to an internal flow path are located in the installation surface, and internal threads are formed around the second openings.

[0005] Moreover, a clamping device (Japanese: クランプ金具) is used when installing an end of the hose piping on the installation surface.

[0006] The clamping device is composed of a pair of clamping members (Japanese: クランプ) respectively formed with bolt insertion holes. While positioning by bringing the pair of clamping members into contact with both sides of the flange head and arranging them, by screwing a bolt inserted through the bolt insertion hole with the internal thread of the installation surface, the flange head is pressed and installed on the installation surface by the fastening force of the bolt, and the first flow path and the second flow path are made to communicate with each other.

[0007] Prior Art Documents

[0008] Patent Documents

[0009] Patent Document 1: Japanese Patent Application Laid-Open No. 2015-215006

[0010] Patent Document 2: Japanese Patent Application Laid-Open No. 2002-188175 Summary of the Invention

[0011] Problems to be Solved by the Invention

[0012] Each of the pair of clamping members constituting the conventional clamping device is configured to include a main body portion provided with a bolt insertion hole and a protruding portion protruding from the main body portion. When installing an end of the hose piping on the installation surface, in a state where the main body portion is brought into contact with an outer peripheral surface of the ring plate portion and the protruding portion is brought into contact with an upper surface of the ring plate portion, a bolt inserted through the bolt insertion hole of the main body portion and screwed with the internal thread is installed perpendicular to the installation surface.

[0013] Furthermore, when the bolt inserted into the bolt through hole of the main body is tightened, the head of the bolt presses against the main body of the clamping member, thereby the protrusion presses the ring plate against the mounting surface in the vertical direction.

[0014] Therefore, the protrusion becomes like a cantilever beam, and the stress is concentrated at the base of the protrusion, which is the boundary with the main body. Damage and deformation are prone to occur at the protrusion, which is not conducive to improving the durability of the clamping component.

[0015] The present invention was made in view of the above circumstances, and its object is to provide an installation structure for a mounted part, wherein the installation structure positions at least a portion of the bolt head closer to the protrusion side than the boundary between the main body and the protrusion, thereby mitigating stress concentration at the boundary between the main body and the protrusion, suppressing breakage and deformation at the protrusion, and improving the durability of the mounting component to achieve a long service life.

[0016] In addition, the present invention aims to provide an installation structure for the flange head of the end of a flexible conduit, wherein the installation structure, by positioning at least a portion of the bolt head on the protrusion side closer to the boundary between the body and the protrusion, mitigates stress concentration at the boundary between the body and the protrusion, suppresses breakage and deformation at the protrusion, and improves the durability of a pair of clamping members to achieve a longer service life.

[0017] Methods for solving problems

[0018] To achieve the above objective, one embodiment of the present invention provides an installation structure comprising an installation member: a main body having a through-hole for bolt insertion and a first abutment surface capable of abutting against the outer peripheral surface of a mounted part; and a protrusion protruding from a portion of the main body above the first abutment surface and having a second abutment surface capable of abutting against the upper surface of the mounted part. The installation structure presses and mounts the mounted part onto the mounting surface by engaging a bolt inserted into the through-hole with the internal thread of the mounting surface while the first abutment surface abuts against the outer peripheral surface of the mounted part and the second abutment surface abuts against the upper surface of the mounted part. The installation structure is characterized in that the axis of the bolt through-hole and the internal thread is inclined relative to the normal of the mounting surface such that at least a portion of the head of the bolt inserted into the through-hole and engaged with the internal thread is located closer to the protrusion than the boundary between the main body and the protrusion.

[0019] In addition, one embodiment of the present invention is characterized in that the axis of the bolt insertion hole and the internal thread is tilted such that the bolt, which is inserted into the bolt insertion hole and screwed into the internal thread, is displaced in a direction in which its lower part is farther away from the mounted part than its upper part.

[0020] In addition, one embodiment of the present invention is characterized in that a seat surface is provided on the upper surface of the mounting member at the location surrounding the bolt insertion hole, the seat surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head.

[0021] In another embodiment of the present invention, there is a mounting structure for a flange head at the end of a flexible conduit. The mounting structure includes a pair of clamping members disposed on both sides of an annular plate portion constituting the end of the flexible conduit and each having a through-hole for bolt insertion. Each clamping member includes: a main body portion extending along the outer peripheral surface of the annular plate portion and having the bolt insertion holes at both ends in its extending direction, and having a first abutting surface capable of abutting against the outer peripheral surface of the annular plate portion; and a protrusion portion protruding from a portion of the main body portion above the first abutting surface and having a protrusion capable of abutting against the upper portion of the annular plate portion. The mounting structure comprises a second abutting surface, wherein the first abutting surface abuts against the outer peripheral surface of the ring plate portion and the second abutting surface abuts against the upper surface of the ring plate portion, and a bolt inserted into the bolt insertion hole is screwed into the internal thread of the mounting surface, thereby pressing and mounting the ring plate portion onto the mounting surface. The mounting structure is characterized in that the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface such that at least a portion of the head of the bolt inserted into the bolt insertion hole and screwed into the internal thread is located on the protrusion side closer to the boundary between the main body portion and the protrusion portion.

[0022] In addition, one embodiment of the present invention is characterized in that the flange head has a first minor diameter portion that protrudes from the annular plate portion and has a diameter smaller than that of the annular plate portion, and the protrusion portion has a third abutting surface that can abut against the outer peripheral surface of the first minor diameter portion.

[0023] In addition, one embodiment of the present invention is characterized in that the axis of the bolt insertion hole and the internal thread is inclined such that the bolt, which is inserted into the bolt insertion hole and engaged with the internal thread, is displaced in a direction at its lower part further away from the flange head than at its upper part.

[0024] In addition, one embodiment of the present invention is characterized in that a seat surface is provided on the upper surface of the clamping member at the location around the bolt insertion hole, the seat surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head.

[0025] Invention Effects

[0026] According to one embodiment of the present invention, in a mounting structure in which the mounting part is pressed and mounted on the mounting surface by engaging the bolt inserted into the bolt insertion hole with the internal thread of the mounting surface, since at least a portion of the bolt head is located on the protrusion side closer to the boundary between the main body and the protrusion, the portion of the bolt head located on the protrusion side closer to the boundary can withstand the shear force generated at the boundary. This helps to alleviate the stress concentration at the boundary between the main body and the protrusion, suppress damage and deformation generated at the protrusion, improve the durability of the mounting component, and achieve a long service life.

[0027] Furthermore, when a structure is adopted in which the axis of the bolt insertion hole and the internal thread is tilted so that the bolt inserted into the bolt insertion hole and engaged with the internal thread is shifted in a direction that is further away from the mounted part than the upper part, it is beneficial to ensure that a part of the bolt head is reliably located on the protrusion side closer than the boundary between the main body and the protrusion. This helps to alleviate stress concentration at the boundary between the main body and the protrusion, suppress damage and deformation at the protrusion, improve the durability of the mounting component, and achieve a long service life.

[0028] Furthermore, when a structure is adopted in which a seat surface is provided on the upper surface of the mounting member around the bolt insertion hole, extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head, it is advantageous to reliably install the bolt in the direction where the bolt insertion hole and internal thread are provided, and it is advantageous to reliably abut the first abutting surface against the outer peripheral surface of the mounted part and to reliably abut the second abutting surface against the upper surface of the mounted part.

[0029] Furthermore, according to one embodiment of the present invention, in the mounting structure of the flange head of the end of the flexible conduit that is pressed and mounted on the mounting surface by screwing the bolt through the bolt insertion hole into the internal thread of the mounting surface, since at least a portion of the bolt head is located on the protrusion side closer to the boundary between the main body and the protrusion, the bolt head located on the protrusion side closer to the boundary can withstand the shear force generated at the boundary, which helps to alleviate the stress concentration at the boundary between the main body and the protrusion, suppress the breakage and deformation generated at the protrusion, improve the durability of the pair of clamping members A, and achieve a long service life.

[0030] Furthermore, when the flange head has a structure that includes a first minor diameter portion that protrudes from the ring plate portion and has a diameter smaller than that of the ring plate portion, and the protrusion portion has a third abutting surface that can abut against the outer peripheral surface of the first minor diameter portion, it is advantageous to position a pair of clamping members disposed on both sides of the ring plate portion.

[0031] Furthermore, when a structure is adopted in which the axis of the bolt insertion hole and the internal thread is tilted so that the bolt inserted into the bolt insertion hole and engaged with the internal thread is shifted in a direction that is further away from the flange head at its lower part than at its upper part, it is advantageous to reliably position a part of the bolt head on the protrusion side than the boundary between the main body and the protrusion. This helps to alleviate stress concentration at the boundary between the main body and the protrusion, suppress damage and deformation at the protrusion, and improve the durability of the pair of clamping members to achieve a longer service life.

[0032] Furthermore, when a structure is adopted in which a seat surface is provided on the upper surface of the clamping member around the bolt insertion hole, extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting against the lower surface of the bolt head, it is advantageous to reliably install the bolt in the direction where the bolt insertion hole and internal thread are provided, and it is advantageous to reliably abut the first abutting surface against the outer peripheral surface of the ring plate portion, the second abutting surface against the upper surface of the ring plate portion, and the third abutting surface against the outer peripheral surface of the first minor diameter portion. Attached Figure Description

[0033] Figure 1 It is a three-dimensional view of the end of the flexible conduit being installed on the mounting surface of the control valve using a clamping device.

[0034] Figure 2 It connects the axis of the flange head to the axis of the two bolts. Figure 1 A sectional view along line AA.

[0035] Figure 3 It is a perspective view illustrating the state of the flange head being installed on the mounting surface of the control valve via bolts, clamping devices, and O-rings.

[0036] Figure 4 This is a side view illustrating the state in which the flange head is installed on the mounting surface of the control valve via bolts, clamping devices, and O-rings.

[0037] Figure 5 The diagrams are for the clamping components. (A) is a perspective view, (B) is a top view, (C) is a rear view, (D) is a side view, (E) is a bottom view, and (F) is a sectional view along line FF of (B).

[0038] Figure 6 This is a side sectional view illustrating the distance between the position of the bolt head pressing against the clamping member and the position of the protruding part pressing against the ring plate.

[0039] Figure 7 These are explanatory diagrams of the clamping components. (A) is a top view, (B) is a bottom view, and (C) is a cross-sectional view along line CC of (A).

[0040] Figure 8 This is a top view showing the clamping member installed on the mounting surface.

[0041] Explanation of reference numerals in the attached figures

[0042] 10 Control valve

[0043] 12 mounting brackets

[0044] 1202 Mounting Surface

[0045] 1204 internal thread

[0046] 16 Flange Head

[0047] 24. Ring plate section

[0048] 2402 Lower surface

[0049] 2404 upper surface

[0050] 2406 outer perimeter

[0051] 26. First minor diameter

[0052] 2602 outer periphery

[0053] 28 Second minor diameter section

[0054] 32 Clamping device

[0055] 34 A pair of clamping components

[0056] 34A and 34B clamping components

[0057] 3402 Main Body

[0058] 3404 Protrusion

[0059] 3412 First contact surface

[0060] 3414 Second contact surface

[0061] 3416 Third contact surface

[0062] 3418 Lower surface

[0063] 3420 upper surface

[0064] 3422 seats

[0065] 36 Bolt through holes

[0066] 44 bolts

[0067] 4402 Head

[0068] 44A upper part

[0069] 44B lower part Detailed Implementation

[0070] (First Embodiment)

[0071] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0072] In this application, the term "installed part" specifically refers, for example, to a connection portion used for installing hydraulic piping onto hydraulic equipment or hydraulic control equipment. However, in this invention, "installed part" is not limited to the components of the embodiments described below, nor is it limited to hydraulic piping; it is also intended to include connection portions or joints for installing hoses, pipes, etc., for other fluids onto the desired device.

[0073] exist Figure 1 , Figure 2 In the figure, reference numeral 10 indicates a control valve mounted on construction machinery and connected to a hydraulic pump, and reference numeral 12 indicates one of the multiple mounting seats provided on the control valve 10.

[0074] Additionally, reference numeral 16 indicates a flange head that engages with the end of the hose 14, and the flange head 16 constitutes the end of the hose piping.

[0075] The flange head 16 is mounted on the mounting surface 1202 of the mounting base 12 using the clamping device 32 of this embodiment.

[0076] First, the flange head 16, which is the part to be installed, will be explained.

[0077] like Figure 2 As shown, a first flow path 18 is formed through the flange head 16 and communicates with the interior of the hose 14.

[0078] like Figure 4 As shown, a portion of the outer periphery of the flange head 16 in the longitudinal direction is formed as a hose coupling 22, which has a threaded connector (not shown) portion covering the end of the hose 14, and a socket 20 provided on the radially outer side of the threaded connector portion and fixed to the end of the hose 14 by being hewn in the radially inner side. An annular plate portion 24 is formed at the top of the remaining portion in the longitudinal direction of the flange head 16.

[0079] In addition, the flange head 16 has a first minor diameter portion 26 that protrudes from the annular plate portion 24 and has a diameter smaller than that of the annular plate portion 24, and also has a second minor diameter portion 28 that protrudes from the first minor diameter portion 26 and has a diameter smaller than that of the first minor diameter portion 26.

[0080] The hose joint 22 and the ring plate 24 are connected via the first minor diameter portion 26 and the second minor diameter portion 28.

[0081] Both the ring plate portion 24 and the first minor diameter portion 26 have a circular outline on their outer periphery, but the outlines of the outer periphery of the ring plate portion 24 and the first minor diameter portion 26 can also be formed by polygonal or other outlines and are not limited to circular outlines.

[0082] The annular plate portion 24 forms the flange head 16 at the end of the hose 14, is placed on the mounting surface 1202, and has a lower surface 2402, an upper surface 2404, and an outer peripheral surface 2406.

[0083] The lower surface 2402 is formed as one side of the thickness direction of the annular plate portion 24, and is formed by a flat surface. The first opening 18A of the first flow path 18 (refer to...) Figure 2 It is located at the center of the lower surface 2402.

[0084] like Figure 2 As shown, a groove 2408 extending in a ring shape around the first opening 18A is provided on the lower surface 2402, and an O-ring 2410 is installed in the groove 2408.

[0085] The upper surface 2404 is formed as the other side of the thickness direction of the annular plate portion 24, and is formed by an annular flat surface. A first small diameter portion 26 is provided protruding from the inner periphery of the upper surface 2404.

[0086] The outer peripheral surface 2406 is formed by a cylindrical surface that connects the outer periphery of the lower surface 2402 and the outer periphery of the upper surface 2404.

[0087] like Figure 3 As shown, the control valve 10 is provided with a plurality of second flow paths 30, the mounting surface 1202 of the mounting base 12 is formed by a flat surface, and the second opening 30A of the second flow path 30 is located on the mounting surface 1202.

[0088] Four internal threads 1204 are provided on the mounting surface 1202 around the second opening 30A, such as... Figure 2 As shown, the four internal threads 1204 are inclined in a predetermined direction.

[0089] like Figure 1 , Figure 3As shown, the clamping device 32, which serves as an installation component, consists of a pair of clamping members 34A. The pair of clamping members 34A are disposed on both sides of the annular plate portion 24 constituting the flange head 16 and each has a through bolt insertion hole 36 formed therethrough. The pair of clamping members 34A are configured with clamping members 34A of the same shape.

[0090] like Figure 3 , Figure 5 As shown, a pair of clamping members 34A each have a main body portion 3402 and a protrusion portion 3404 extending along the outer peripheral surface 2406 of the ring plate portion 24.

[0091] The main body 3402 has bolt insertion holes 36 at both ends in its extending direction and a first contact surface 3412 that can abut against the outer peripheral surface 2406 of the ring plate 24.

[0092] The protrusion 3404 protrudes from the upper part of the main body 3402 of the first abutting surface 3412, and has a second abutting surface 3414 that can abut against the upper surface 2404 of the ring plate 24 and a third abutting surface 3416 that can abut against the outer peripheral surface 2602 of the first small diameter portion 26.

[0093] In addition, such as Figure 5 As shown, the clamping member 34A has a thickness in a direction orthogonal to its extension direction and extends in a semi-circular arc shape, and the lower surface 3418 of the face that is one side of the thickness direction is formed by a single flat surface.

[0094] And, as Figure 5 As shown in (F), the first abutment surface 3412 extends vertically upward from the inner end of the lower surface 3418, the second abutment surface 3414 extends horizontally inward from the upper end of the first abutment surface 3412, and the third abutment surface 3416 extends vertically upward from the end of the second abutment surface 3414.

[0095] In addition, the central part of the upper surface 3420, which is the other side of the thickness direction of the clamping member 34A, is formed by a single flat surface in the extension direction, and the upper surface 3420 is provided with seat surfaces 3422 at both ends in the extension direction.

[0096] The seat surface 3422 is located on the upper surface of the clamping member 34A around the bolt insertion hole 36, extends on a plane orthogonal to the axis of the bolt insertion hole 36, and can abut against the lower surface of the head of the bolt 44.

[0097] like Figure 2 , Figure 4 , Figure 6As shown, the bolt insertion hole 36 provided in the main body 3402 and the axis T of the internal thread 1204 provided in the mounting surface 1202 are inclined relative to the normal L of the mounting surface 1202 in such a way that at least a portion of the head 4402 of the bolt 44, which is inserted into the bolt insertion hole 36 and engaged with the internal thread 1204, is located on the protrusion 3404 side, which is closer to the boundary B between the main body 3402 and the protrusion 3404.

[0098] In detail, when viewed from a direction orthogonal to an imaginary plane orthogonal to the mounting surface 1202 and passing through the bolt insertion hole 36 and the internal thread 1204, the axis T of the bolt insertion hole 36 and the internal thread 1204 is tilted at an angle θ relative to the normal L at any point on the mounting surface 1202.

[0099] In this embodiment, such as Figure 6 As shown, the bolt 44, which is inserted into the bolt insertion hole 36 and screwed into the internal thread 1204, is tilted in such a way that its lower part 44B is displaced in a direction further away from the flange head 16 than its upper part 44A.

[0100] In this embodiment, the extension line of the axis T of the bolt insertion hole 36 and the internal thread 1204 intersects the axis of the flange head 16. The axis T of the bolt insertion hole 36 and the internal thread 1204 is formed at an inclination so as to approach the axis T of the flange head 16 as it faces upward. Therefore, the bolt 44 is installed at an inclination so that its lower part 44B is away from the axis of the flange head 16.

[0101] like Figure 2 , Figure 4 , Figure 6 As shown, the angle θ of the axis T of the bolt insertion hole 36 and the internal thread 1204 relative to the normal L of the mounting surface 1202 passing through the center of the opening of the internal thread 1204 is set to be greater than 0 degrees and less than 17.9 degrees (0 < θ ≤ 17.9°). Here, the clamping member 34A is sized according to the SAE standard. When the angle θ of the axis T of the bolt insertion hole 36 and the internal thread 1204 relative to the normal L of the mounting surface 1202 is greater than 17.9 degrees, the bolt 44 will protrude from the outer peripheral surface of the main body 3402 of the clamping member 34A. Therefore, in this embodiment, it is set to less than 17.9 degrees.

[0102] Since the seat surface 3422 extends on a plane orthogonal to the axis of the bolt insertion hole 36, it is inclined at an angle θ relative to the lower surface 3418 and the upper surface of the clamping member 34A.

[0103] like Figure 2 , Figure 3 , Figure 4As shown, when the flange head 16 is installed on the control valve 10, the lower surface 2402 of the annular plate portion 24 of the flange head 16 is aligned with the mounting surface 1202 of the mounting base 12 in such a way that the first opening 18A of the first flow path 18 is opposite to the second opening 30A of the second flow path 30, and a pair of clamping members 34A are arranged along the annular plate portion 24.

[0104] And, as Figure 2 As shown, with the first abutting surface 3412 of the main body 3402 abutting against the outer peripheral surface 2406 of the ring plate portion 24, the second abutting surface 3414 of the protrusion 3404 abutting against the upper surface 2404 of the ring plate portion 24, and the third abutting surface 3416 of the protrusion 3404 abutting against the outer peripheral surface 2602 of the first small diameter portion 26, the bolt 44 inserted into the bolt insertion hole 36 is screwed into the internal thread 1204 of the mounting surface 1202 via the washer 42 and fastened to the bolt insertion hole 36 of the main body 3402, thereby pressing and mounting the ring plate portion 24 of the flange head 16 onto the mounting surface 1202.

[0105] In this way, by fastening the bolt 44, the second abutment surface 3414 presses against the upper surface 2404 of the ring plate portion 24, thereby pressing the lower surface 2402 of the ring plate portion 24 against the mounting surface 1202 of the mounting base 12, and the lower surface 2402 of the ring plate portion 24 and the mounting surface 1202 are liquid-tightly combined via the O-ring 2410.

[0106] At the same time, the first abutting surface 3412 presses against the outer peripheral surface 2406 of the ring plate portion 24 from both sides of the ring plate portion 24, and the third abutting surface 3416 presses against the outer peripheral surface 2602 of the first small diameter portion 26. Therefore, a pair of clamping members 34A are installed on the mounting surface 1202 in a positioned state.

[0107] Furthermore, when the second abutment surface 3414 abuts against the upper surface 2404 of the ring plate portion 24 in such a way that the second abutment surface 3414 can reliably press against the upper surface 2404 of the ring plate portion 24, a gap S is ensured between the lower surface 3418 of the clamping member 34A and the mounting surface 1202.

[0108] According to this embodiment, such as Figure 6 As shown, a portion of the head 4402 of the bolt 44 is located closer to the protrusion 3404 than the boundary B between the main body 3402 and the protrusion 3404. Therefore, the portion of the head 4402 of the bolt 44 located closer to the protrusion 3404 than the boundary B can withstand the shear force generated at the boundary B. This helps to alleviate the stress concentration at the boundary B between the main body 3402 and the protrusion 3404, suppress the breakage and deformation generated at the protrusion 3404, and improve the durability of the pair of clamping members 34A, thereby achieving a longer service life.

[0109] Furthermore, since the protrusion 3404 has a structure that allows it to abut against the outer peripheral surface 2602 of the first small diameter portion 26, it is advantageous to position the pair of clamping members 34A located on both sides of the ring plate portion 24.

[0110] Furthermore, since the axis T of the bolt insertion hole 36 and the internal thread 1204 is inclined relative to the normal L of the mounting surface 1202 in such a way that the lower part 44B of the bolt 44, which is inserted into the bolt insertion hole 36 and engaged with the internal thread 1204, is shifted away from the flange head 16 than the upper part 44A, it is advantageous to reliably position a portion of the head 4402 of the bolt 44 on the side closer to the protrusion 3404 than the boundary B between the main body 3402 and the protrusion 3404. This is advantageous to alleviate the stress concentration at the boundary B between the main body 3402 and the protrusion 3404, suppress the breakage and deformation generated at the protrusion 3404, improve the durability of the pair of clamping members 34A, and achieve a long service life.

[0111] As described above, the angle θ of the axis T of the bolt insertion hole 36 and the internal thread 1204 relative to the normal L of the mounting surface 1202 passing through the center of the opening of the internal thread 1204 is set to be greater than 0 degrees and less than 17.9 degrees. If the angle θ is increased within this range, a part of the head 4402 of the bolt 44 can be located on the side of the protrusion 3404 closer than the boundary B, which is more conducive to suppressing the breakage and deformation generated in the protrusion 3404, improving the durability of the pair of clamping members 34A and achieving a long service life.

[0112] Furthermore, since a seat surface 3422 extending on a plane orthogonal to the axis of the bolt insertion hole 36 and capable of abutting against the lower surface of the head of the bolt 44 is provided on the upper surface of the clamping member 34A around the bolt insertion hole 36, it is advantageous to reliably install the bolt 44 in the direction where the bolt insertion hole 36 and the internal thread 1204 are provided. It is also advantageous to reliably abut the first abutting surface 3412 against the outer peripheral surface 2406 of the ring plate portion 24, to reliably abut the second abutting surface 3414 against the upper surface 2404 of the ring plate portion 24, and to reliably abut the third abutting surface 3416 against the outer peripheral surface 2602 of the first small diameter portion 26.

[0113] (A variation of the first embodiment)

[0114] In the first embodiment, the extension line of the axis T of the bolt insertion hole 36 and the internal thread 1204 intersects the axis of the flange head 16. In contrast, in this modified example, the extension line of the axis T of the bolt insertion hole 36 and the internal thread 1204 does not intersect the axis of the flange head 16.

[0115] Furthermore, in the following description of the embodiments, the same reference numerals are used for the same parts and components as in the first embodiment, and their descriptions are omitted. The focus is on the differences from the first embodiment.

[0116] In this variation, such as Figure 8 As shown, in a top view, the bolt insertion holes 36 and the axis T of the internal threads 1204 at both ends of the main body 3402 along the length direction are located on the same straight line. In this modified example, the bolt insertion holes 36 and the axis T of the internal threads 1204 of the clamping member 34B are inclined relative to the unshown normal L of the mounting surface 1202 in such a way that the heads 44A of the two bolts 44 that are inserted into the bolt insertion holes 36 provided at both ends of the main body 3402 and are screwed into the internal threads 1204 are close to each other and the lower parts 44B are separated from each other.

[0117] like Figure 7 , Figure 8 As shown, by inserting two bolts 44 through the bolt holes 36 at both ends of the pair of main body portions 3402 along the length direction, and screwing them into the internal threads 1204 of the mounting surface 1202, the same as in the first embodiment is achieved. Figure 6 As shown, the second abutting surface 3414 presses against the upper surface 2404 of the ring plate portion 24, while the first abutting surface 3412 presses against the outer peripheral surface 2406 of the ring plate portion 24 from both sides, and the third abutting surface 3416 presses against the outer peripheral surface 2602 of the first small diameter portion 26. Therefore, a pair of clamping members 34A are installed on the mounting surface 1202 in a positioned state.

[0118] like Figure 7 As shown, the clamping member 34B extends in an arc shape, and the bolt 44 is located at both ends of the arc-shaped clamping member. Therefore, similar to the first embodiment, a portion of the head 4402 of the bolt 44 is located on the protrusion 3404 side closer to the boundary B between the main body 3402 and the protrusion 3404.

[0119] Therefore, in this modified example, similarly to the first embodiment, the axis T of the bolt insertion hole 36 and the internal thread 1204 is inclined relative to the normal L of the mounting surface 1202 such that a part of the head 4402 of the bolt 44 is located on the side of the protrusion 3404 closer to the boundary B between the main body 3402 and the protrusion 3404, thus achieving the same effect as the first embodiment.

[0120] Furthermore, in the above embodiment, the case in which the annular plate portion 24 of the flange head 16 provided at the end of the hose fitting, which is the mounting part, is mounted on the mounting surface 1202 of the control valve 10 has been described. However, the feature of the present invention is that the bolt is inclined relative to the normal of the mounting surface. The present invention is not limited to the mounting structure at the end of the hose fitting. The application of the present invention is arbitrary. The present invention can be applied to various mounting structures of conventionally known parts.

[0121] That is, the present invention can be applied to an installation structure in which the mounting part is mounted on the mounting surface using mounting components.

[0122] The mounting component is configured, for example, to include: a main body having a through-hole for bolt insertion and a first contact surface capable of abutting against the outer peripheral surface of the mounted part; and a protrusion protruding from a portion of the main body above the first contact surface and having a second contact surface capable of abutting against the upper surface of the mounted part.

[0123] Furthermore, by engaging the bolt inserted into the bolt insertion hole with the internal thread of the mounting surface while the first abutting surface abuts against the outer peripheral surface of the mounted part and the second abutting surface abuts against the upper surface of the mounted part, the mounted part is pressed and mounted on the mounting surface.

[0124] At this time, the axis of the bolt insertion hole and the internal thread is inclined relative to the normal of the mounting surface such that at least a portion of the head of the bolt that is inserted into the bolt insertion hole and engaged with the internal thread is located on the protrusion side closer to the boundary between the main body and the protrusion. Therefore, the bolt head located on the protrusion side closer to the boundary can withstand the shear force generated at the boundary, which helps to alleviate the stress concentration at the boundary between the main body and the protrusion, suppress the damage and deformation generated at the protrusion, improve the durability of the mounting component and achieve a long service life.

[0125] In this case, as in the first embodiment, the axis of the bolt insertion hole and the internal thread can be tilted such that the bolt inserted into the bolt insertion hole and engaged with the internal thread is displaced in the direction that the lower part is farther away from the mounted part than the upper part.

[0126] Alternatively, as in the first embodiment, a seat surface can be provided on the upper surface of the mounting member around the bolt insertion hole, such that the seat surface extends on a plane orthogonal to the axis of the bolt insertion hole and can abut against the lower surface of the bolt head.

Claims

1. A mounting structure of a mounted portion, the mounting structure being provided with a mounting member that has a main body portion through which a bolt insertion hole is formed and that has a first abutting surface that can abut against an outer peripheral surface of the mounted portion, and a protruding portion that is provided so as to protrude from a position of the main body portion at an upper portion of the first abutting surface and that has a second abutting surface that can abut against an upper surface of the mounted portion, the mounting structure pressing and mounting the mounted portion to a mounting surface by screwing a bolt that is inserted into the bolt insertion hole to an internal thread of the mounting surface in a state in which the first abutting surface abuts against the outer peripheral surface of the mounted portion and the second abutting surface abuts against the upper surface of the mounted portion, the mounting structure being characterized in that axes of the bolt insertion hole and the internal thread are inclined with respect to a normal line of the mounting surface in such a manner that at least a portion of a head of the bolt that is inserted into the bolt insertion hole and that is screwed to the internal thread is positioned on the protruding portion side from a boundary between the main body portion and the protruding portion, and that the axes of the bolt insertion hole of the mounting member and the axes of the internal thread of the mounting surface coincide with each other before and after the mounted portion is pressed and mounted to the mounting surface by screwing the bolt to the internal thread.

2. The mounting structure of a mounted portion according to claim 1, characterized in that the axes of the bolt insertion hole and the internal thread are inclined in such a manner that the bolt that is inserted into the bolt insertion hole and that is screwed to the internal thread is displaced in a direction in which a lower portion is farther from the mounted portion than an upper portion.

3. The mounting structure of a mounted portion according to claim 1 or 2, characterized in that a seating surface that extends on a plane that is orthogonal to the axes of the bolt insertion hole and that can abut against a lower surface of the head of the bolt is provided at a position of an upper surface of the mounting member around the bolt insertion hole.

4. A mounting structure of a flange head of an end portion of a hose pipe, the mounting structure having a pair of clamping members that are disposed on both sides of a ring plate portion that constitutes a flange head of an end portion of a hose pipe and that each have a bolt insertion hole formed therethrough, each of the pair of clamping members having a main body portion that extends along an outer peripheral surface of the ring plate portion and that has the bolt insertion hole provided at both ends in an extending direction thereof and a first abutting surface that can abut against the outer peripheral surface of the ring plate portion, and a protruding portion that is provided so as to protrude from a position of the main body portion at an upper portion of the first abutting surface and that has a second abutting surface that can abut against an upper surface of the ring plate portion, the mounting structure pressing and mounting the ring plate portion to a mounting surface by screwing a bolt that is inserted into the bolt insertion hole to an internal thread of the mounting surface in a state in which the first abutting surface abuts against the outer peripheral surface of the ring plate portion and the second abutting surface abuts against the upper surface of the ring plate portion, the mounting structure being characterized in that The axis of the bolt insertion hole and the internal thread is inclined with respect to the normal line of the mounting surface in such a manner that at least a portion of the head of the bolt inserted through the bolt insertion hole and screwed with the internal thread is positioned at a position on the protruding portion side than the boundary between the main body portion and the protruding portion, and is configured such that the axis of the bolt insertion hole of the clamping member coincides with the axis of the internal thread of the mounting surface before and after the ring plate portion is crimped and mounted to the mounting surface by screwing the bolt with the internal thread.

5. The mounting structure of a flange head of an end portion of a hose pipe according to claim 4, wherein the flange head has a first small diameter portion provided protruding from the ring plate portion and having a smaller diameter than the ring plate portion, the protruding portion has a third abutting surface capable of abutting with the outer peripheral surface of the first small diameter portion.

6. The mounting structure of a flange head of an end portion of a hose pipe according to claim 4 or 5, wherein the axis of the bolt insertion hole and the internal thread is inclined in such a manner that the bolt inserted through the bolt insertion hole and screwed with the internal thread is displaced in a direction away from the flange head at a lower portion than an upper portion.

7. The mounting structure of a flange head of an end portion of a hose pipe according to claim 4 or 5, wherein a seating surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting with the lower surface of the head of the bolt is provided at a portion of the upper surface of the clamping member around the bolt insertion hole.

8. The mounting structure of a flange head of an end portion of a hose pipe according to claim 6, wherein a seating surface extending on a plane orthogonal to the axis of the bolt insertion hole and capable of abutting with the lower surface of the head of the bolt is provided at a portion of the upper surface of the clamping member around the bolt insertion hole.

9. The mounting structure of a mounted portion according to claim 1, wherein when an angle of the inclination of the axis of the bolt insertion hole and the internal thread with respect to the normal line of the mounting surface is set as θ, the θ is set to be greater than 0 degrees and 17.9 degrees or less.

10. The mounting structure of a flange head of an end portion of a hose pipe according to claim 4, wherein when an angle of the inclination of the axis of the bolt insertion hole and the internal thread with respect to the normal line of the mounting surface is set as θ, the θ is set to be greater than 0 degrees and 17.9 degrees or less.

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